Our Data Sources
40, Thomas Street, Mountain Ash has 41 entries in the Land Registry, most recently in June 2024 and a single entry in the EPC database dated April 2017.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 40, Thomas Street, Mountain Ash, we estimate a market value of £162,779 and a rental value of £906 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £144,176 and £803 per month respectively.
Plot Size
HM Land Registry records the plot of land for 40, Thomas Street, Mountain Ash as measuring 147 m2.
That makes it the 11th largest plot in the postcode, where 24 of the 41 other houses have recorded plot data.
Energy Efficiency
40, Thomas Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 06 Apr 2017.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 40, Thomas Street, Mountain Ash completed on 13th June 2024 at £47,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold 4 times.
Values of comparable properties have risen by 28.4% over the period since June 2024.
- Sold Jun 2024£47,000
- Sold Apr 2017£85,000
- Sold Jun 2012£40,000
Similar Properties Sold Nearby
Since 2013 67 properties similar to 40, Thomas Street, Mountain Ash have sold within a radius of 630 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 17th April 2026, was 9, Clarence Street, Mountain Ash, CF45 3BB, a freehold house which sold for £130,000.
Read more about house prices in CF45.
- Sold Apr 2026£130,000 | 4 Bed House9, Clarence Street, Mountain Ash, CF45 3BB9, Clarence Street, Mountain Ash, CF45 3BB
- Sold Dec 2025£130,000 | 4 Bed House76, Consort Street, Mountain Ash, CF45 3AU76, Consort Street, Mountain Ash, CF45 3AU
- Sold Jun 2025£135,000 | 3 Bed House3, Glancynon Street, Mountain Ash, CF45 3YU3, Glancynon Street, Mountain Ash, CF45 3YU
- Sold Jun 2025£127,500 | 3 Bed House27, Edward Street, Mountain Ash, CF45 3AJ27, Edward Street, Mountain Ash, CF45 3AJ
- Sold Mar 2025£86,000 | 3 Bed House23, Gwernifor Street, Mountain Ash, CF45 3NA23, Gwernifor Street, Mountain Ash, CF45 3NA
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £124,993, ranging from £83,107 to £167,818.
- 38 Thomas Street
3 Bed House | 5 m | Est. Value: £137,131
- 8 Gladstone Terrace
3 Bed House | 7 m | Est. Value: £88,966
- 36 Thomas Street
3 Bed House | 10 m | Est. Value: £132,236
- 7 Gladstone Terrace
3 Bed House | 14 m | Est. Value: £89,530
- 34 Thomas Street
3 Bed House | 15 m | Est. Value: £127,995
Location Comparison
Of the 73 addresses on Thomas Street, Mountain Ash, CF45, 40, Thomas Street, Mountain Ash comes out as the 8th largest and the 8th most expensive in our analysis of the public data.
It is also £5k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- Mountain Ash|800 m away
- Penrhiwceiber|1.0 km away
- Fernhill|2.1 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












